Polyploidy is a mechanism often attributed to causing some speciation events in sympatry.

多倍性被当在同一地区并存的物种发物种形成事件的一种机制。

Autopolyploidy A type of polyploidy involving the multiplication of chromo-some sets from only one species.

由同一个体，同一纯种的染色体数目加倍而成的多倍性现象。